Stopping Autoinducer-2 Chatter by Means of an Indigenous Bacterium (Acinetobacter sp DKY-1): A New Antibiofouling Strategy in a Membrane Bioreactor for Wastewater Treatment

被引：43

作者：

Lee, Kibaek ^{[1
,5
]}

Kim, Yea-Won ^{[2
]}

Lee, Seonki ^{[1
]}

Lee, Sang Hyun ^{[1
]}

Nahm, Chang Hyun ^{[1
]}

Kwon, Hyeokpil ^{[1
]}

Park, Pyung-Kyu ^{[3
]}

Choo, Kwang-Ho ^{[4
,5
]}

Koyuncu, Ismail ^{[6
]}

Drews, Anja ^{[7
]}

Lee, Chung-Hak ^{[1
]}

Lee, Jung-Kee ^{[2
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 08826, South Korea

[2] Paichai Univ, Dept Biomed Sci & Biotechnol, Daejeon 35345, South Korea

[3] Yonsei Univ, Dept Environm Engn, Wonju 26493, South Korea

[4] Kyungpook Natl Univ, Dept Environm Engn, Daegu 41566, South Korea

[5] Kyungpook Natl Univ, Adv Inst Water Ind, Daegu 41566, South Korea

[6] Istanbul Tech Univ, Dept Environm Engn, TR-34469 Istanbul, Turkey

[7] HTW Berlin Univ Appl Sci, Sch Life Sci Engn Engn 2, D-12459 Berlin, Germany

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2018年 / 52卷 / 11期

关键词：

QUORUM-QUENCHING BACTERIA; CELL-CELL COMMUNICATION; BIOFOULING CONTROL; VIBRIO-HARVEYI; BACILLUS-SUBTILIS; BIOFILM FORMATION; ESCHERICHIA-COLI; MBR; INHIBITION; SIGNAL;

D O I：

10.1021/acs.est.7b05824

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Bacterial quorum quenching (QQ) by means of degrading signaling molecules has been applied to antibiofouling strategies in a membrane bioreactor (MBR) for wastewater treatment. However, the target signaling molecules have been limited to N-acyl homoserine lactones participating in intraspecies quorum sensing. Here, an approach to disrupting autoinducer-2 (AI-2) signaling molecules participating in interspecies quorum sensing was pursued as a next-generation antibiofouling strategy in an MBR for wastewater treatment. We isolated an indigenous QQ bacterium (Acinetobacter sp. DKY-1) that can attenuate the expression of the quorumsensing (QS) response through the inactivation of an autoinducer-2 signaling molecule, 4,5-dihydroxy-2,3-pentanedione (DPD), among four kinds of autoinducer-2 QS bacteria. hydrophilic with a molecular weight of <400 Da. The addition DPD concentration and remarkably reduced membrane bio wastewater engineering, could enlarge the range of QQ-MBR treatment. DKY-1 released AI-2 QQ compounds, which were verified to be of DKY-1 entrapping beads into an MBR significantly decreased fouling. This new approach, combining molecular biology with for antibiofouling and energy savings in the field of wastewater treatment.

引用

页码：6237 / 6245

页数：9

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